| Name | Bennett County |
| State | South Dakota |
| FIPS Code | 46007 |
| County Seat | Martin |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2024) | 3,312 |
| Population Growth Rate(2020-2024) | -2.02% |
| Majority Ethnicity | Native American 56.8% |
| Public School Majority Ethnicity | Native American 68% |
| Partisan Voting Index | Republican:+12 |
| Unemployment Rate (May 2026) | 3.5% |
| Area Code(s) | 605 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 36.85% |
| African American | 0.18% |
| Hispanic | 4.59% |
| Asian | 1.59% |
| Native American | 56.8% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 12.68% |
| African American | 0% |
| Hispanic | 4.42% |
| Asian | 0.43% |
| Native American | 67.81% |
| Hawaiin/Pacific Islander | 0% |